Apparatus for matching colors in image signals
US5459530A · kind A · utility
13Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Dec 14, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An inexpensive, yet robust color matcher is achieved by an apparatus which includes a compare device coupled to receive, as a first input, an input signal representing a combination of a luminance component Y and a chrominance component, and further coupled to receive as a second input, a threshold T, for comparing the input signal to the threshold T and outputting a color match signal if the input signal falls within a range defined by T and -T; and a threshold supply device coupled to the second input for supplying the threshold T, wherein the threshold T is a function of Y and at least two adjustable parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.